From b75d0af9665c2c46160860f1c837925defe74ad8 Mon Sep 17 00:00:00 2001
From: Luke Towers <luke@luketowers.ca>
Date: Sat, 10 Aug 2019 09:28:01 -0600
Subject: [PATCH] Improve support for previewMode in Repeaters & NestedForms

Fixes #4521
---
 modules/backend/formwidgets/NestedForm.php | 5 +++++
 modules/backend/formwidgets/Repeater.php   | 1 +
 2 files changed, 6 insertions(+)

diff --git a/modules/backend/formwidgets/NestedForm.php b/modules/backend/formwidgets/NestedForm.php
index 3bd2c1e2d..cd3b5ce45 100644
--- a/modules/backend/formwidgets/NestedForm.php
+++ b/modules/backend/formwidgets/NestedForm.php
@@ -42,6 +42,10 @@ class NestedForm extends FormWidgetBase
             'usePanelStyles',
         ]);
 
+        if ($this->formField->disabled) {
+            $this->previewMode = true;
+        }
+
         $config = $this->makeConfig($this->form);
         $config->model = $this->model;
         $config->data = $this->getLoadValue();
@@ -54,6 +58,7 @@ class NestedForm extends FormWidgetBase
         }
 
         $widget = $this->makeWidget(Form::class, $config);
+        $widget->previewMode = $this->previewMode;
         $widget->bindToController();
 
         $this->formWidget = $widget;
diff --git a/modules/backend/formwidgets/Repeater.php b/modules/backend/formwidgets/Repeater.php
index b72bdf245..9e6f80d25 100644
--- a/modules/backend/formwidgets/Repeater.php
+++ b/modules/backend/formwidgets/Repeater.php
@@ -277,6 +277,7 @@ class Repeater extends FormWidgetBase
         }
 
         $widget = $this->makeWidget('Backend\Widgets\Form', $config);
+        $widget->previewMode = $this->previewMode;
         $widget->bindToController();
 
         $this->indexMeta[$index] = [